package Java_1_1;
public class Java_1_1_2 {
    public static void main(String[] args){
        int a=0;
        a++;
        a++;
        a++;
        System.out.println("当前点赞人数为:"+a);
        a--;
        System.out.println("当前点赞人数为:"+a);
    }
}
